{"metadata": {"vulnerability": "CVE-2026-98982", "count": 18, "kinds": {"milestone": 7, "sighting": 1, "kev": 0, "other": 10}}, "data": [{"timestamp": "2026-09-25T10:25:14.384Z", "date_only": false, "value": "2026-09-25T10:25:14.384Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2026-98982", "field": "cveMetadata.dateReserved"}, {"timestamp": "2026-10-23T12:19:59.784Z", "date_only": false, "value": "2026-10-23T12:19:59.784Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2026-98982", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-23T13:17:20Z", "date_only": false, "value": "2026-10-23T13:17:20Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-2RH7-4PH4-XMM5", "record": "GHSA-2RH7-4PH4-XMM5", "field": "database_specific.nvd_published_at"}, {"timestamp": "2026-10-23T13:17:20.043Z", "date_only": false, "value": "2026-10-23T13:17:20.043", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2026-98982", "record": "FKIE_CVE-2026-98982", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-23T13:28:02.919Z", "date_only": false, "value": "2026-10-23T13:28:02.919346Z", "kind": "sighting", "label": "Seen", "source": "https://infosec.exchange/users/cve/statuses/117490455818644638", "record": "CVE-2026-98982", "field": "creation_timestamp", "uuid": "305bc3aa-fb6a-4771-bbab-8ad1b0fada2b", "content": "CVE-2026-98982 namespace: don't let a pseudo dentry become the root of a mount In the Linux kernel, the following vulnerability has been resolved:\nnamespace: don't let a pseudo dentry become the root of a mount\nd_alloc_pseudo() hands out dentries for pipes, sockets and other filesthat are never anyone's child or parent. They carry DCACHE_NORCU anddentry_free() frees them right away because no lockless path walk canever reach them. That holds as long as such a dentry isn't the root ofa mount. But bind mounting /proc/self/fd/<fd> of such a file doesexactly that.\nMost callers of alloc_file_pseudo() put their files on kernel-internalmounts and may_copy_tree() refuses those. bpf_token_create() doesn't. Itplaces the token file on the bpffs mount the caller handed it and thatmount is in the caller's mount namespace so the clone goes through:\n  mount --bind /proc/self/fd/<token> <file>  open_tree(tokfd, \"\", AT_EMPTY_PATH | OPEN_TREE_CLONE) + move_mount()\n__follow_mount_rcu() then loads ->mnt_root of that mount, reads d_seqand d_flags of the dentry and only then checks mount_lock. The dentrycan be gone by then. The final mntput() of an unmounted parent unhooksa child that stayed attached to it under mount_lock alone. When thechild's holder does the final put right after that the root is dput()and freed immediately while a walker that found the mount hashed stilllooks at it.\nRefuse to clone a mount with a DCACHE_NORCU dentry as its root. Nothingsensible can be done with a bind mount of a bpf token anyway.\nhttps://www.cve.org/CVERecord?id=CVE-2026-98982https://git.kernel.org/stable/c/a256e31e0c54c4c37d2523aa52faabdcdd2ebc07https://git.kernel.org/stable/c/7e1c466011ba9e64d43075396badc03191bcee44https://git.kernel.org/stable/c/00287afa7cd989efdbf5822b7efac33cce7d489ahttps://git.kernel.org/stable/c/b138e16fb1e81376cea89f727dda7bfccd140de4#kernel #Linux#CVE_2026_98982#bot", "url": "https://infosec.exchange/users/cve/statuses/117490455818644638"}, {"timestamp": "2026-10-23T15:31:33Z", "date_only": false, "value": "2026-10-23T15:31:33Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-2RH7-4PH4-XMM5", "record": "GHSA-2RH7-4PH4-XMM5", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2026-10-24T01:10:53Z", "date_only": false, "value": "2026-10-24T01:10:53.000Z", "kind": "other", "label": "Advisory revision", "source": "csaf_microsoft \u00b7 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